Apparent absence of reversal of oxaphosphetane formation in some Wittig reactions
作者:S.Matthew Cairns、William E. McEwen
DOI:10.1016/s0040-4039(00)84307-5
日期:1986.1
Reversal of oxaphosphetane formation in the reaction of benzaldehyde with benzylidene(2-N,N-dimethylaminophenyl)diphenylphosphorane () and benzylidine(4-N,N-dlmethylamlnophenyl)diphenylphosphorane (), respectively, is found not to occur in tetrahydrofuran solution. The reason for this is that the rates of dissociation of the oxaphosphetanes to stilbenes and the corresponding triarylphosphine oxide
The first chelating phosphorus–nitrogen dioxo ligand: complexation of an MoO(O<sub>2</sub>)<sub>2</sub>fragment
作者:Werner R. Thiel、Thomas Priermeier、Tassilo Bog
DOI:10.1039/c39950001871
日期:——
2-Diphenylphosphinoyl-N,N-dimethylaniline is oxidized at nitrogen by a dilute solution of H2O2 in the presence of MoO(O2)2·(H2O)x; the resulting phosphorusânitrogen dioxo-ligand forms a molybdenum oxobisperoxo complex, which is structurally characterized by single crystal X-ray diffraction.